Reverse Osmosis
1 model in this family. Representative models: APP 0.6 - 1.0.
International brand dossier
Danfoss Pumps
Danfoss is a Danish engineering group with strong positions in VLT drives and high-pressure pump technology.In water treatment, Danfoss records are relevant both for variable-speed motor control and for APP high-pressure pumps and energy-related components used in RO, desalination, deionized water, humidification, and water-reuse systems.
Danfoss Pumps's position in pumps and pumping equipment is defined by product families such as Reverse Osmosis, Ultra Pure Water, Tap Water and Fire pumps / Tap Water.The portfolio is best understood inside raw water intake, RO/NF feed, transfer, boosting, chemical dosing, wastewater lift, and desalination hydraulics, where engineers compare the technology route, family boundaries, and duty fit before narrowing to individual models.
Representative series on this page include APP 0.6 - 1.0, PAHT 2 - 12.5 and PAH 2 - 12.5.Selection should focus on flow, head, efficiency, NPSH margin, wetted materials, seals, and drive arrangement.
6
Indexed models
5
Product families
0
Subgroups
Product range and selection
How to choose Danfoss Pumps & Pumping
This section answers two questions: which main product families Danfoss offers, and which parameters to compare before choosing a specific model.
Step 1: Choose a product family by application
The main families shown on this page are Reverse Osmosis, Ultra Pure Water, Tap Water, and Fire pumps / Tap Water. Start with the treatment objective, equipment format, and operating duty, then use the model index below to compare exact specifications.
Step 2: Confirm the model by key parameters
After choosing a product family, compare flow and head, materials, efficiency, and duty cycle. Replacement projects should also verify installation or loading conditions, interfaces, and compatibility with the existing system; new projects should consider operating practice, maintenance, and spare-parts or consumables availability.
Product family overview
5 product familys on this page.
Ultra Pure Water
1 model in this family. Representative models: PAHT 2 - 12.5.
Tap Water
1 model in this family. Representative models: PAH 2 - 12.5.
Fire pumps / Tap Water
1 model in this family. Representative models: PAHF 20.
Energy Recovery Devices
2 models in this family. Representative models: iSave 21 Plus, iSave 50.
Quick Model Index
Fast lookup for 6 indexed products
The table is intentionally compact: use it to scan model names, product families, and source links quickly. Open the profile cards below when you want richer context.
Reverse Osmosis
1 indexed model
Ultra Pure Water
1 indexed model
Tap Water
1 indexed model
Fire pumps / Tap Water
1 indexed model
Energy Recovery Devices
2 indexed models
| Model | Application | Sources |
|---|---|---|
| iSave 21 Plus | The Danfoss iSave 21 Plus is an energy recovery device designed for high-pressure reverse osmosis systems, featuring an isobaric pressure exchanger, booster pump. | |
| iSave 50 | The iSave 50 is an Energy Recovery Device designed for reverse osmosis systems, featuring a compact isobaric pressure exchanger and vane pump combination. |
Brand Technical Documents
6 readable document pages
These document pages collect product manuals, model notes, accessory documents, and application files for this brand in the current category. Open the PDF when original tables, diagrams, or full manuals are needed.
APP 0.6 - 1.0
Danfoss APP pumps are high-pressure, positive displacement axial piston pumps designed for reverse osmosis applications, suitable for corrosive fluids.
iSave 21 Plus
The Danfoss iSave 21 Plus is an energy recovery device designed for high-pressure reverse osmosis systems, featuring an isobaric pressure exchanger, booster pump.
iSave 50
The iSave 50 is an Energy Recovery Device designed for reverse osmosis systems, featuring a compact isobaric pressure exchanger and vane pump combination.
PAH 2 - 12.5
The Danfoss PAH 2-12.5 is a positive displacement, axial piston pump designed for high-pressure tap water applications.
PAHF 20
The Danfoss PAHF 20 is a high-pressure axial piston pump designed for water mist fire extinguishing systems in land and marine applications. This maintenance-free.
PAHT 2 - 12.5
The Danfoss PAHT 2-12.5 is a positive displacement axial piston pump designed for technical water applications like ultra-pure and de-ionized water.
AI-ready Product Profiles
Product cards for screening and future AI matching
These cards are designed as reusable product profiles: the same format can later appear in AI search results, shortlist views, and assisted product matching.
Reverse Osmosis
1 profile card
Pumps & Pumping
Product profile
APP 0.6 - 1.0
Danfoss APP pumps are high-pressure, positive displacement axial piston pumps designed for reverse osmosis applications, suitable for corrosive fluids.
Ultra Pure Water
1 profile card
Pumps & Pumping
Product profile
PAHT 2 - 12.5
The Danfoss PAHT 2-12.5 is a positive displacement axial piston pump designed for technical water applications like ultra-pure and de-ionized water.
Tap Water
1 profile card
Pumps & Pumping
Product profile
PAH 2 - 12.5
The Danfoss PAH 2-12.5 is a positive displacement, axial piston pump designed for high-pressure tap water applications.
Fire pumps / Tap Water
1 profile card
Pumps & Pumping
Product profile
PAHF 20
The Danfoss PAHF 20 is a high-pressure axial piston pump designed for water mist fire extinguishing systems in land and marine applications. This maintenance-free.
Energy Recovery Devices
2 profile cards
Pumps & Pumping
Product profile
iSave 21 Plus
The Danfoss iSave 21 Plus is an energy recovery device designed for high-pressure reverse osmosis systems, featuring an isobaric pressure exchanger, booster pump.
Pumps & Pumping
Product profile
iSave 50
The iSave 50 is an Energy Recovery Device designed for reverse osmosis systems, featuring a compact isobaric pressure exchanger and vane pump combination.